St. Vitus' Abbey on the Rott was a Benedictine monastery founded in 1121 by the nobleman Dietmar of Lungau, and dissolved during the secularisation of Bavaria in 1802.
The premises were given at first to the Damenstift of St. Anna in Munich, but in 1829 came into the possession of the Saxon Baron Maximilian von Speck-Sternburg and then in 1858 were sold to Count Maximilian von Montgelas.
Formerly in the diocese of Salzburg, the abbey was a member of the Benedictine Salzburg Congregation from 1641 until its dissolution.
References:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.